What Aurelion Sol's lane will be.
Alright so this is just a little theory, but I will make it brief, I promise.
So we know about the new Mount Targon lore (Which I adore by the way), and the champions involved. I think it's safe to agree that joining Diana, Leona and Pantheon is Aurelion Sol, because obviously in his teaser we see mountains similar to mount Targon and the empty champion slot in the mount Targon page. Since Diana is usually referred to as a mid laner, although she could be a jungle she was intended as a Mid laner so lets stick with that. Pantheon is a top laner, Leona is a support. So this leaves us with this:
Top: Pantheon Mid: Diana Support: Leona Jungle: ??? Adc: ???
Now this leaves Aurelion Sol with those 2 possible lanes since riot doesn't seem to like champions with the same lore in 2 of the same lane, especially if there are other lanes to fill. Jhin just came out who is adc, and it would be weird to release 2 adc one after another, so this leaves the jungle role, unless Riot decides Diana is a jungler.
Please don't kill me this is just my own take on what he's (She's? It's?) going to be which is jungle.